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@@ -0,0 +1,505 @@
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+package main
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+
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+import (
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+ "bytes"
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+ "database/sql"
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+ "fmt"
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+ "log"
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+ "reflect"
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+ "strings"
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+ "time"
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+
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+ _ "github.com/go-sql-driver/mysql"
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+)
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+
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+type Mysql struct {
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+ Address string //数据库地址:端口
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+ UserName string //用户名
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+ PassWord string //密码
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+ DBName string //数据库名
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+ DB *sql.DB //数据库连接池对象
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+ MaxOpenConns int //用于设置最大打开的连接数，默认值为0表示不限制。
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+ MaxIdleConns int //用于设置闲置的连接数。
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+}
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+
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+func (m *Mysql) Init() {
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+ if m.MaxOpenConns <= 0 {
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+ m.MaxOpenConns = 20
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+ }
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+ if m.MaxIdleConns <= 0 {
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+ m.MaxIdleConns = 20
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+ }
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+ var err error //utf8mb4
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+ m.DB, err = sql.Open("mysql", fmt.Sprintf("%s:%s@tcp(%s)/%s?charset=utf8mb4", m.UserName, m.PassWord, m.Address, m.DBName))
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+ if err != nil {
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+ log.Println(err)
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+ return
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+ }
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+ m.DB.SetMaxOpenConns(m.MaxOpenConns)
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+ m.DB.SetMaxIdleConns(m.MaxIdleConns)
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+ m.DB.SetConnMaxLifetime(time.Minute * 3)
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+ err = m.DB.Ping()
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+ if err != nil {
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+ log.Println(err)
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+ }
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+}
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+
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+//新增
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+func (m *Mysql) Insert(tableName string, data map[string]interface{}) int64 {
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+ return m.InsertByTx(nil, tableName, data)
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+}
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+
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+//带有事务的新增
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+func (m *Mysql) InsertByTx(tx *sql.Tx, tableName string, data map[string]interface{}) int64 {
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+ fields := []string{}
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+ values := []interface{}{}
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+ placeholders := []string{}
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+ if tableName == "dataexport_order" {
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+ if _, ok := data["user_nickname"]; ok {
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+ data["user_nickname"] = ""
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+ }
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+ }
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+ for k, v := range data {
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+ fields = append(fields, k)
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+ values = append(values, v)
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+ placeholders = append(placeholders, "?")
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+ }
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+ q := fmt.Sprintf("INSERT INTO %s (%s) VALUES (%s)", tableName, strings.Join(fields, ","), strings.Join(placeholders, ","))
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+ //log.Println("mysql", q, values)
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+ return m.InsertBySqlByTx(tx, q, values...)
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+}
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+
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+//sql语句新增
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+func (m *Mysql) InsertBySql(q string, args ...interface{}) int64 {
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+ return m.InsertBySqlByTx(nil, q, args...)
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+}
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+
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+//带有事务的sql语句新增
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+func (m *Mysql) InsertBySqlByTx(tx *sql.Tx, q string, args ...interface{}) int64 {
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+ result, _ := m.ExecBySqlByTx(tx, q, args...)
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+ if result == nil {
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+ return -1
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+ }
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+ id, err := result.LastInsertId()
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+ if err != nil {
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+ log.Println(err)
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+ return -1
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+ }
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+ return id
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+}
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+
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+//批量新增
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+func (m *Mysql) InsertIgnoreBatch(tableName string, fields []string, values []interface{}) (int64, int64) {
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+ return m.InsertIgnoreBatchByTx(nil, tableName, fields, values)
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+}
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+
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+//带事务的批量新增
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+func (m *Mysql) InsertIgnoreBatchByTx(tx *sql.Tx, tableName string, fields []string, values []interface{}) (int64, int64) {
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+ return m.insertOrReplaceBatchByTx(tx, "INSERT", "IGNORE", tableName, fields, values)
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+}
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+
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+//批量新增
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+func (m *Mysql) InsertBatch(tableName string, fields []string, values []interface{}) (int64, int64) {
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+ return m.InsertBatchByTx(nil, tableName, fields, values)
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+}
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+
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+//带事务的批量新增
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+func (m *Mysql) InsertBatchByTx(tx *sql.Tx, tableName string, fields []string, values []interface{}) (int64, int64) {
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+ return m.insertOrReplaceBatchByTx(tx, "INSERT", "", tableName, fields, values)
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+}
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+
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+//批量更新
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+func (m *Mysql) ReplaceBatch(tableName string, fields []string, values []interface{}) (int64, int64) {
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+ return m.ReplaceBatchByTx(nil, tableName, fields, values)
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+}
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+
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+//带事务的批量更新
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+func (m *Mysql) ReplaceBatchByTx(tx *sql.Tx, tableName string, fields []string, values []interface{}) (int64, int64) {
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+ return m.insertOrReplaceBatchByTx(tx, "REPLACE", "", tableName, fields, values)
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+}
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+
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+func (m *Mysql) insertOrReplaceBatchByTx(tx *sql.Tx, tp string, afterInsert, tableName string, fields []string, values []interface{}) (int64, int64) {
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+ placeholders := []string{}
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+ for range fields {
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+ placeholders = append(placeholders, "?")
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+ }
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+ placeholder := strings.Join(placeholders, ",")
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+ array := []string{}
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+ for i := 0; i < len(values)/len(fields); i++ {
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+ array = append(array, fmt.Sprintf("(%s)", placeholder))
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+ }
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+ q := fmt.Sprintf("%s %s INTO %s (%s) VALUES %s", tp, afterInsert, tableName, strings.Join(fields, ","), strings.Join(array, ","))
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+ result, _ := m.ExecBySqlByTx(tx, q, values...)
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+ if result == nil {
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+ return -1, -1
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+ }
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+ v1, e1 := result.RowsAffected()
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+ if e1 != nil {
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+ log.Println(e1)
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+ return -1, -1
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+ }
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+ v2, e2 := result.LastInsertId()
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+ if e2 != nil {
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+ log.Println(e2)
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+ return -1, -1
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+ }
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+ return v1, v2
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+}
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+
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+//sql语句执行
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+func (m *Mysql) ExecBySql(q string, args ...interface{}) (sql.Result, error) {
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+ return m.ExecBySqlByTx(nil, q, args...)
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+}
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+
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+//sql语句执行,带有事务
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+func (m *Mysql) ExecBySqlByTx(tx *sql.Tx, q string, args ...interface{}) (sql.Result, error) {
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+ var stmtIns *sql.Stmt
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+ var err error
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+ if tx == nil {
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+ stmtIns, err = m.DB.Prepare(q)
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+ } else {
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+ stmtIns, err = tx.Prepare(q)
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+ }
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+ if err != nil {
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+ log.Println(err)
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+ return nil, err
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+ }
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+ defer stmtIns.Close()
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+ result, err := stmtIns.Exec(args...)
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+ if err != nil {
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+ //log.Println(args, err)
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+ log.Println(err)
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+ return nil, err
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+ }
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+ return result, nil
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+}
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+
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+/*不等于 map[string]string{"ne":"1"}
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+ *不等于多个 map[string]string{"notin":[]interface{}{1,2}}
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+ *字段为空 map[string]string{"name":"$isNull"}
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+ *字段不为空 map[string]string{"name":"$isNotNull"}
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+ */
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+func (m *Mysql) Find(tableName string, query map[string]interface{}, fields, order string, start, pageSize int) *[]map[string]interface{} {
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+ fs := []string{}
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+ vs := []interface{}{}
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+ for k, v := range query {
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+ rt := reflect.TypeOf(v)
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+ rv := reflect.ValueOf(v)
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+ if rt.Kind() == reflect.Map {
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+ for _, rv_k := range rv.MapKeys() {
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+ if rv_k.String() == "ne" {
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+ fs = append(fs, fmt.Sprintf("%s!=?", k))
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+ vs = append(vs, rv.MapIndex(rv_k).Interface())
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+ }
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+ if rv_k.String() == "notin" {
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+ if len(rv.MapIndex(rv_k).Interface().([]interface{})) > 0 {
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+ for _, v := range rv.MapIndex(rv_k).Interface().([]interface{}) {
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+ fs = append(fs, fmt.Sprintf("%s!=?", k))
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+ vs = append(vs, v)
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+ }
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+ }
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+ }
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+ if rv_k.String() == "in" {
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+ if len(rv.MapIndex(rv_k).Interface().([]interface{})) > 0 {
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+ _fs := fmt.Sprintf("%s in (?", k)
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+ for k, v := range rv.MapIndex(rv_k).Interface().([]interface{}) {
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+ if k > 0 {
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+ _fs += ",?"
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+ }
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+ vs = append(vs, v)
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+ }
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+ _fs += ")"
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+ fs = append(fs, _fs)
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+ }
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+ }
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+ }
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+ } else {
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+ if v == "$isNull" {
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+ fs = append(fs, fmt.Sprintf("%s is null", k))
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+ } else if v == "$isNotNull" {
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+ fs = append(fs, fmt.Sprintf("%s is not null", k))
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+ } else {
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+ fs = append(fs, fmt.Sprintf("%s=?", k))
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+ vs = append(vs, v)
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+ }
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+ }
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+ }
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+ var buffer bytes.Buffer
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+ buffer.WriteString("select ")
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+ if fields == "" {
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+ buffer.WriteString("*")
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+ } else {
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+ buffer.WriteString(fields)
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+ }
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+ buffer.WriteString(" from ")
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+ buffer.WriteString(tableName)
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+ if len(fs) > 0 {
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+ buffer.WriteString(" where ")
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+ buffer.WriteString(strings.Join(fs, " and "))
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+ }
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+ if order != "" {
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+ buffer.WriteString(" order by ")
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+ buffer.WriteString(order)
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+ }
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+ if start > -1 && pageSize > 0 {
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+ buffer.WriteString(" limit ")
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+ buffer.WriteString(fmt.Sprint(start))
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+ buffer.WriteString(",")
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+ buffer.WriteString(fmt.Sprint(pageSize))
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+ }
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+ q := buffer.String()
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+ //log.Println(q, vs)
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+ return m.SelectBySql(q, vs...)
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+}
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+
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+//sql语句查询
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+func (m *Mysql) SelectBySql(q string, args ...interface{}) *[]map[string]interface{} {
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+ return m.SelectBySqlByTx(nil, q, args...)
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+}
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+func (m *Mysql) SelectBySqlByTx(tx *sql.Tx, q string, args ...interface{}) *[]map[string]interface{} {
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+ return m.Select(0, nil, tx, q, args...)
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+}
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+func (m *Mysql) Select(bath int, f func(l *[]map[string]interface{}), tx *sql.Tx, q string, args ...interface{}) *[]map[string]interface{} {
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+ var stmtOut *sql.Stmt
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+ var err error
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+ if tx == nil {
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+ stmtOut, err = m.DB.Prepare(q)
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+ } else {
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+ stmtOut, err = tx.Prepare(q)
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+ }
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+ if err != nil {
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+ log.Println(err)
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+ return nil
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+ }
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+ defer stmtOut.Close()
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+ rows, err := stmtOut.Query(args...)
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+ if err != nil {
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+ log.Println(err)
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+ return nil
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+ }
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+ if rows != nil {
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+ defer rows.Close()
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+ }
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+ columns, err := rows.Columns()
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+ if err != nil {
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+ log.Println(err)
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+ return nil
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+ }
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+ list := []map[string]interface{}{}
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+ for rows.Next() {
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+ scanArgs := make([]interface{}, len(columns))
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+ values := make([]interface{}, len(columns))
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+ ret := make(map[string]interface{})
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+ for k, _ := range values {
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+ scanArgs[k] = &values[k]
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+ }
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+ err = rows.Scan(scanArgs...)
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+ if err != nil {
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+ log.Println(err)
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+ break
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+ }
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+ for i, col := range values {
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+ if v, ok := col.([]uint8); ok {
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+ ret[columns[i]] = string(v)
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+ } else {
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+ ret[columns[i]] = col
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+ }
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+ }
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+ list = append(list, ret)
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+ if bath > 0 && len(list) == bath {
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+ f(&list)
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+ list = []map[string]interface{}{}
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+ }
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+ }
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+ if bath > 0 && len(list) > 0 {
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+ f(&list)
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+ list = []map[string]interface{}{}
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+ }
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+ return &list
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+}
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+func (m *Mysql) SelectByBath(bath int, f func(l *[]map[string]interface{}), q string, args ...interface{}) {
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+ m.SelectByBathByTx(bath, f, nil, q, args...)
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+}
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+func (m *Mysql) SelectByBathByTx(bath int, f func(l *[]map[string]interface{}), tx *sql.Tx, q string, args ...interface{}) {
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+ m.Select(bath, f, tx, q, args...)
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+}
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+func (m *Mysql) FindOne(tableName string, query map[string]interface{}, fields, order string) *map[string]interface{} {
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+ list := m.Find(tableName, query, fields, order, 0, 1)
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+ if list != nil && len(*list) == 1 {
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+ temp := (*list)[0]
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+ return &temp
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+ }
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+ return nil
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+}
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+
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+//修改
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+func (m *Mysql) Update(tableName string, query, update map[string]interface{}) bool {
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+ return m.UpdateByTx(nil, tableName, query, update)
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+}
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+
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+//带事务的修改
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+func (m *Mysql) UpdateByTx(tx *sql.Tx, tableName string, query, update map[string]interface{}) bool {
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+ q_fs := []string{}
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+ u_fs := []string{}
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+ values := []interface{}{}
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+ for k, v := range update {
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+ q_fs = append(q_fs, fmt.Sprintf("%s=?", k))
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+ values = append(values, v)
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+ }
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+ for k, v := range query {
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+ u_fs = append(u_fs, fmt.Sprintf("%s=?", k))
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+ values = append(values, v)
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+ }
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+ q := fmt.Sprintf("update %s set %s where %s", tableName, strings.Join(q_fs, ","), strings.Join(u_fs, " and "))
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+ //log.Println(q, values)
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+ return m.UpdateOrDeleteBySqlByTx(tx, q, values...) >= 0
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+}
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+
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+//删除
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+func (m *Mysql) Delete(tableName string, query map[string]interface{}) bool {
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+ return m.DeleteByTx(nil, tableName, query)
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+}
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+func (m *Mysql) DeleteByTx(tx *sql.Tx, tableName string, query map[string]interface{}) bool {
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+ fields := []string{}
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+ values := []interface{}{}
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+ for k, v := range query {
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+ fields = append(fields, fmt.Sprintf("%s=?", k))
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+ values = append(values, v)
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+ }
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+ q := fmt.Sprintf("delete from %s where %s", tableName, strings.Join(fields, " and "))
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+ log.Println(q, values)
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+ return m.UpdateOrDeleteBySqlByTx(tx, q, values...) > 0
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+}
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+
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+//修改或删除
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+func (m *Mysql) UpdateOrDeleteBySql(q string, args ...interface{}) int64 {
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+ return m.UpdateOrDeleteBySqlByTx(nil, q, args...)
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+}
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+
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+//带事务的修改或删除
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+func (m *Mysql) UpdateOrDeleteBySqlByTx(tx *sql.Tx, q string, args ...interface{}) int64 {
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+ result, err := m.ExecBySqlByTx(tx, q, args...)
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+ if err != nil {
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+ log.Println(err)
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+ return -1
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+ }
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+ count, err := result.RowsAffected()
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+ if err != nil {
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|
|
+ log.Println(err)
|
|
|
+ return -1
|
|
|
+ }
|
|
|
+ return count
|
|
|
+}
|
|
|
+
|
|
|
+//总数
|
|
|
+func (m *Mysql) Count(tableName string, query map[string]interface{}) int64 {
|
|
|
+ fields := []string{}
|
|
|
+ values := []interface{}{}
|
|
|
+ for k, v := range query {
|
|
|
+ rt := reflect.TypeOf(v)
|
|
|
+ rv := reflect.ValueOf(v)
|
|
|
+ if rt.Kind() == reflect.Map {
|
|
|
+ for _, rv_k := range rv.MapKeys() {
|
|
|
+ if rv_k.String() == "ne" {
|
|
|
+ fields = append(fields, fmt.Sprintf("%s!=?", k))
|
|
|
+ values = append(values, rv.MapIndex(rv_k).Interface())
|
|
|
+ }
|
|
|
+ if rv_k.String() == "notin" {
|
|
|
+ if len(rv.MapIndex(rv_k).Interface().([]interface{})) > 0 {
|
|
|
+ for _, v := range rv.MapIndex(rv_k).Interface().([]interface{}) {
|
|
|
+ fields = append(fields, fmt.Sprintf("%s!=?", k))
|
|
|
+ values = append(values, v)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if rv_k.String() == "in" {
|
|
|
+ if len(rv.MapIndex(rv_k).Interface().([]interface{})) > 0 {
|
|
|
+ _fs := fmt.Sprintf("%s in (?", k)
|
|
|
+ for k, v := range rv.MapIndex(rv_k).Interface().([]interface{}) {
|
|
|
+ if k > 0 {
|
|
|
+ _fs += ",?"
|
|
|
+ }
|
|
|
+ values = append(values, v)
|
|
|
+ }
|
|
|
+ _fs += ")"
|
|
|
+ fields = append(fields, _fs)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else if v == "$isNull" {
|
|
|
+ fields = append(fields, fmt.Sprintf("%s is null", k))
|
|
|
+ } else if v == "$isNotNull" {
|
|
|
+ fields = append(fields, fmt.Sprintf("%s is not null", k))
|
|
|
+ } else {
|
|
|
+ fields = append(fields, fmt.Sprintf("%s=?", k))
|
|
|
+ values = append(values, v)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ q := fmt.Sprintf("select count(1) as count from %s", tableName)
|
|
|
+ if len(query) > 0 {
|
|
|
+ q += fmt.Sprintf(" where %s", strings.Join(fields, " and "))
|
|
|
+ }
|
|
|
+ log.Println(q, values)
|
|
|
+ return m.CountBySql(q, values...)
|
|
|
+}
|
|
|
+func (m *Mysql) CountBySql(q string, args ...interface{}) int64 {
|
|
|
+ stmtIns, err := m.DB.Prepare(q)
|
|
|
+ if err != nil {
|
|
|
+ log.Println(err)
|
|
|
+ return -1
|
|
|
+ }
|
|
|
+ defer stmtIns.Close()
|
|
|
+
|
|
|
+ rows, err := stmtIns.Query(args...)
|
|
|
+ if err != nil {
|
|
|
+ log.Println(err)
|
|
|
+ return -1
|
|
|
+ }
|
|
|
+ if rows != nil {
|
|
|
+ defer rows.Close()
|
|
|
+ }
|
|
|
+ var count int64 = -1
|
|
|
+ if rows.Next() {
|
|
|
+ err = rows.Scan(&count)
|
|
|
+ if err != nil {
|
|
|
+ log.Println(err)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return count
|
|
|
+}
|
|
|
+
|
|
|
+//执行事务
|
|
|
+func (m *Mysql) ExecTx(msg string, f func(tx *sql.Tx) bool) bool {
|
|
|
+ tx, err := m.DB.Begin()
|
|
|
+ if err != nil {
|
|
|
+ log.Println(msg, "获取事务错误", err)
|
|
|
+ } else {
|
|
|
+ if f(tx) {
|
|
|
+ if err := tx.Commit(); err != nil {
|
|
|
+ log.Println(msg, "提交事务错误", err)
|
|
|
+ } else {
|
|
|
+ return true
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ if err := tx.Rollback(); err != nil {
|
|
|
+ log.Println(msg, "事务回滚错误", err)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return false
|
|
|
+}
|
|
|
+
|
|
|
+/*************方法命名不规范，上面有替代方法*************/
|
|
|
+func (m *Mysql) Query(query string, args ...interface{}) *[]map[string]interface{} {
|
|
|
+ return m.SelectBySql(query, args...)
|
|
|
+}
|
|
|
+
|
|
|
+func (m *Mysql) QueryCount(query string, args ...interface{}) (count int) {
|
|
|
+ count = -1
|
|
|
+ if !strings.Contains(strings.ToLower(query), "count(*)") {
|
|
|
+ fmt.Println("QueryCount need query like < select count(*) from ..... >")
|
|
|
+ return
|
|
|
+ }
|
|
|
+ count = int(m.CountBySql(query, args...))
|
|
|
+ return
|
|
|
+}
|
zhengkun